Microsoft-Decision-1 Scores the Choices an Agent Has to Make

Automated excerpt

Microsoft published the model on 9 October 2026 in Microsoft Foundry, with access through OpenRouter planned. The model was built by post-training Qwen3. 5-9B for single-pass decision scoring, and Microsoft states it will rebase the model on other systems, including Microsoft AI and OpenAI models. Microsoft's launch post on the Command Line publication describes a model built for a narrow job.

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